Drip Fertigation Program on Growth, Crop Productivity, Water, and Fertilizer-Use Efficiency of Bt Cotton in Semi-arid Tropical Region of India

Jayakumar, M.; Surendran, U.; Manickasundaram, P.

doi:10.1080/00103624.2014.969403

Cited by 42 publications

(25 citation statements)

References 13 publications

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“…By contrast, the medium level of fertigation improved the IWP values compared with plots of high and low fertilization levels, which was consistent with results of Ierna et al (2011). Adequate and timely availability of water and nutrients and their synergistic interaction might have promoted the plant growth, increased yield and ultimately resulted in greater IWP (Jayakumar et al, 2015).…”

Section: Iwp and Pfp For Different Fertigation Levelssupporting

confidence: 79%

“…Many heavy rainfall events may have led to greater vulnerability to nutrient leaching losses and so to decreased fertilizer use efficiency in 2012 ( Table 1). In 2013, better fertigation scheduling was used to improve the nutrient uptake and growth of potato (Phene and Sanders, 1976) and promote the formation and translocation of assimilates from source to sink (Jayakumar et al, 2015). These are two possible reasons for yield differences in the two seasons.…”

Section: Potato Yields Under Different Fertigation Levelsmentioning

confidence: 99%

“…In recent years, this method has been proposed to determine drip fertigation schedules for maize (Ibrahim et al, 2016), cotton (Jayakumar et al, 2015), arecanut (Bhat and Sujatha, 2009), guava (Ramniwas et al, 2013), date palm (Al-Qurashi et al, 2016), strawberry (Kachwaya and Chandel, 2015), capsicum (Suman et al, 2016) and tomato (Rajan et al, 2014). Liu et al (2014) evaluated the effects of five reduced doses of fertilizer with fertigation (10%-50% of the traditional fertilizer dose under rain-fed conditions) on N and P losses through runoff and leachate water on tea yield on silt loam soil.…”

Section: R E G U L a R A R T I C L Ementioning

confidence: 99%

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Drip Fertigation Regime for Potato on Sandy Soil

et al. 2017

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To establish the optimum fertilizer rate and propose an appropriate drip fertigation regime for potato (Solanum tuberosum L.) on sandy soil, a two-year field experiment comparing different fertigation levels on potato yield, irrigation water productivity (IWP) and partial fertilizer productivity (PFP) was carried out during 2012–2013. The treatments included five fertigation levels: 10%, 30%, 50%, 70% and 90% of the recommended fertilizer dose of 420:105:495 of N:P:K in kg ha–1 year–1 in 2012; and 10%, 35%, 60%, 85% and 110% of the recommended dose of 390:150:465 of N:P:K in kg ha–1 year–1 in 2013. The recommended fertilizer dose was estimated based on the method of nutrient balance for a target yield of 45.0 Mg ha–1. The soil matric potential at 20 cm depth beneath the emitters was controlled above –25 kPa for drip fertigation. Results showed the highest tuber yield was 38.0 Mg ha–1 for 90%NPK in 2012 and 45.8 Mg ha–1 for 60%NPK in 2013, which was significantly higher than that for 10%NPK. The highest IWP was for 70%NPK in 2012 and 60%NPK in 2013. The highest PFP values were 255.5 kg kg−1 in 2012 and 316.4 kg kg−1 in 2013, recorded in the 10%NPK plots and were significantly higher than for other fertigation treatments. High yield levels of potatoes and both high IWP and PFP could be reached by drip fertigation with 72% of the recommended fertilization dose. Compared with the recommended fertilizer dose, the yield and IWP of 72% NPK increased by 5.9% and 4.7%, respectively. It was possible to make average savings in one season alone of 136, 36 and 152 kg ha–1 N, P2O5 and K2O, respectively. In conclusion, drip fertigation with 72% NPK should be considered optimum for potato production on sandy soils. Each fertilizer amount based on irrigation interval was applied with irrigation quota at 5–6 mm when soil matric potential at soil depths of 20 cm immediately under drip emitters reached –25 kPa. Furthermore, drip fertigation was triggered when 10 consecutive days were without fertigation or rainfall in 24 h exceeded 10 mm.

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Section: Iwp and Pfp For Different Fertigation Levelssupporting

confidence: 79%

Section: Potato Yields Under Different Fertigation Levelsmentioning

confidence: 99%

Section: R E G U L a R A R T I C L Ementioning

confidence: 99%

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Drip Fertigation Regime for Potato on Sandy Soil

et al. 2017

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“…Média dos genótipos de Gossypium barbadense para os acúmulos de N nas folhas (ANF), no caule (ANC) e nas raízes (ANR), comparando os suprimentos de P no solo (adequado e baixo). e baixo no solo (Jayakumar et al, 2015). Esse resultado é explicado pela menor produção de MST das plantas cultivadas em nível baixo de P no solo (Figura 1).…”

Section: Methodsunclassified

Eficiência no uso de nitrogênio por genótipos de algodoeiro arbóreo sob aplicação de fósforo

Santos¹,

Araújo

Camacho

2015

RCA

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RESUMO: A produção eficiente de algodão (Gossypium barbadense) em solos com baixos teores de fósforo (P) exige um maior conhecimento sobre a interferência das adaptações vegetais, em relação ao estresse de P, na absorção, no transporte e no uso de outros nutrientes, como o nitrogênio (N). Assim, a seleção de genótipos eficientes no uso do N em condições de baixo suprimento de P é uma ferramenta eficaz para obter o desenvolvimento vegetal adequado. Este trabalho foi realizado com o objetivo de avaliar a eficiência do uso de N em genótipos de algodoeiro, em diferentes disponibilidades de P. Foram testados 14 genótipos de algodoeiro, cultivados em dois suprimentos de P ̶ adequado e baixo nível. Foram avaliados a concentração e o acúmulo de N, bem como as eficiências de absorção, transporte e uso de N. Os genótipos cultivados em baixo suprimento de P apresentaram maior concentração de N foliar, indicando relação de sinergismo entre o N e o P. O genótipo MT 92 demonstrou maior capacidade de absorção e transporte de N em condições de baixo suprimento de P no solo, enquanto o MT 105 demonstrou maior capacidade de conversão de N em biomassa. Os genótipos foram caracterizados como fonte de genes de adaptação à baixa disponibilidade de P para o uso de N, sendo indicados para o melhoramento genético no cultivo de algodoeiro. ABSTRACT:The efficient cotton (Gossypium barbadense) yield in soils with low phosphorus (P) content require a better understanding of the interference of plant adaptations regarding P stress, absorption, transport and use of other nutrients such as nitrogen (N). Thus, the selection of genotypes efficient in the use of N in low P supply conditions is an effective tool for adequate plant development. This work aims to evaluate the N use efficiency in cotton genotypes grown in different P availability conditions. We tested 14 genotypes of pima cotton, grown in two supply levels of P: adequate and low level. We evaluated the concentration and accumulation of N, as well as the N efficiency of absorption, transport and use. Genotypes grown with low P supply showed higher leaves N concentration, indicating a synergistic relationship between N and P. The MT 92 genotype showed a higher capacity to absorb and transport N in soil with low P supply, while the MT 105 genotype showed higher capacity of converting N into biomass. The genotypes studied characterize a selection of genes for adaptation to low P availability for the use of N, and are indicated for genetic improvement in the cotton crop (Gossypium hirsutun L).

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“…This includes adoption of microirrigation techniques such as drip, sprinkler and microsprinklers 34 , crop varieties resistant to drought/water deficit, re-adjustment of cropping and nutrient application patterns 35 , planting period adjustment (moving the planting window depending on the rainfall), prioritization of areas/crops to be brought under irrigation and following the practice of deficit irrigation. Besides, sophisticated tillage operations (laser levelling) and traditional mulching techniques could also decrease water use by limiting soil evaporation and plant transpiration, and more area can be brought under irrigation.…”

Section: Future Irrigation Demandsmentioning

confidence: 99%

FAO-CROPWAT Model-Based Estimation of Crop Water Need and Appraisal of Water Resources for Sustainable Water Resource Management:Pilot Study for Kollam District - Humid Tropical Region of Kerala, India

Surendran¹,

Sushanth²,

Mammen³

et al. 2017

Current Science

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An effort has been made to calculate the water needs for various crops in different agro-ecological units (AEUs) of Kollam district (a humid tropical region of Kerala) using FAO-CROPWAT. The major cultivated crops are rice, coconut, rubber, pepper, banana, brinjal, tomato, tapioca, cardamom, tea, etc. The gross water required for these crops has been computed in various AEUs using meteorological parameters. Using evapotranspiration and effective rainfall in each unit, a water balance has been worked out. An overall water balance of the district has been attempted by considering irrigation, domestic and industrial demand of AEUs, under current scenario and future demand. The gross irrigation demand for the currently irrigated area in the district at 70% efficiency is 1045 mm 3 , of which 920 mm 3 is supplied from surface water sources and 125 mm 3 from groundwater sources. The projected future total water demands for irrigation, drinking and industrial purposes will be 2667 mm 3 . However, the utilizable water resource from all river basins of Kollam is only 1117 mm 3 . The above data shows a deficit of 1550 mm 3 and it will be difficult to arrive at requirements with the existing water resources at a given point of time. We infer that if the total area is brought under irrigation, there will be water scarce years, and hence decreasing irrigation or the command area needs to be adopted to manage this shortfall and sustain production. We have also discussed several options/strategies for better water management under these changing climatic circumstances to provide water to meet the demands of all the users.

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Drip Fertigation Program on Growth, Crop Productivity, Water, and Fertilizer-Use Efficiency of Bt Cotton in Semi-arid Tropical Region of India

Cited by 42 publications

References 13 publications

Drip Fertigation Regime for Potato on Sandy Soil

Drip Fertigation Regime for Potato on Sandy Soil

Eficiência no uso de nitrogênio por genótipos de algodoeiro arbóreo sob aplicação de fósforo

FAO-CROPWAT Model-Based Estimation of Crop Water Need and Appraisal of Water Resources for Sustainable Water Resource Management:Pilot Study for Kollam District - Humid Tropical Region of Kerala, India

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