Influence of deficit irrigation on growth, yield and yield parameters of cotton–maize cropping sequence

Sampathkumar, T.; Pandian, B. J.; Madugundu, Rangaswamy; Manickasundaram, P.; Jeyakumar, P.

doi:10.1016/j.agwat.2013.08.018

Cited by 55 publications

(36 citation statements)

References 29 publications

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“…The highest plant height was measured in I 100 plots. Reduction of plant height as a symptom of drought stress has been observed in many crops (Sampathkumar et al, 2013). In 2012 the extent of negative impact of drought stress on plant height was similar for I 75 and I 50 ; however, in 2013, the height reduction was greater in I 50 compared with I 75 (Table 4).…”

Section: Energy Inputmentioning

confidence: 87%

Potential of Milk Thistle for Biomass Production in Semiarid Regions

et al. 2015

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Water shortage is the major constraint for biomass production in semiarid regions. Biomass production of milk thistle [Silybum marianum (L.) Gaertn] and energy balance of this crop under different irrigation regimes (full and deficit irrigation) and soil organic amending treatments (poultry manure [PM] and vermicompost [VC]) was evaluated in a two‐year field experiment. Biomass yield reduced by 10 and 22% under moderate (I75) and severe deficit (I50) irrigation, respectively. Under deficit irrigation, the contribution of leaves and heads to the final biomass reduced in favor of the stalk. Regardless of the irrigation regime, application of soil amendments improved biomass yield. Total energy input used for milk thistle production was 9829 MJ ha−1, in which 68% was related to nonrenewable energy sources. Diesel fuel (51%) had the biggest share of energy used for milk thistle production, followed by irrigation water and machinery. Energy input in I75 and I50 was 7 and 15% less than full irrigation (I100). Net energy obtained from milk thistle was 116,688 MJ ha−1 with energy efficiency (energy output/energy input ratio) of 12.8. Taking into account that milk thistle is an annual crop with low energy input requirements, it seems that milk thistle has a considerable potential for biomass production using I75 in regions with limited irrigation water availability.

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Section: Energy Inputmentioning

confidence: 87%

Potential of Milk Thistle for Biomass Production in Semiarid Regions

et al. 2015

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“…Little information has been reported describing root morphology and the physiology of mulch drip irrigation systems and their relationships with cotton yield and WUE under different water and N management. Deficit irrigation results in deeper root penetration of the cotton plant (Sampathkumar et al, 2013), which can conserve 22% of the soil water (Mustafa et al, 2011). Nitrogen application to a cotton crop especially in a water deficit is essential to recover growth and development from drought stress (Khan et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

Rational Water and Nitrogen Management Improves Root Growth, Increases Yield and Maintains Water Use Efficiency of Cotton under Mulch Drip Irrigation

et al. 2017

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There is a need to optimize water-nitrogen (N) applications to increase seed cotton yield and water use efficiency (WUE) under a mulch drip irrigation system. This study evaluated the effects of four water regimes [moderate drip irrigation from the third-leaf to the boll-opening stage (W1), deficit drip irrigation from the third-leaf to the flowering stage and sufficient drip irrigation thereafter (W2), pre-sowing and moderate drip irrigation from the third-leaf to the boll-opening stage (W3), pre-sowing and deficit drip irrigation from the third-leaf to the flowering stage and sufficient drip irrigation thereafter (W4)] and N fertilizer at a rate of 520 kg ha-1 in two dressing ratios [7:3 (N1), 2:8 (N2)] on cotton root morpho-physiological attributes, yield, WUE and the relationship between root distribution and dry matter production. Previous investigations have shown a strong correlation between root activity and water consumption in the 40–120 cm soil layer. The W3 and especially W4 treatments significantly increased root length density (RLD), root volume density (RVD), root mass density (RMD), and root activity in the 40–120 cm soil layer. Cotton RLD, RVD, RMD was decreased by 13.1, 13.3, and 20.8%, respectively, in N2 compared with N1 at 70 days after planting (DAP) in the 0–40 cm soil layer. However, root activity in the 40–120 cm soil layer at 140 DAP was 31.6% higher in N2 than that in N1. Total RMD, RLD and root activity in the 40–120 cm soil were significantly and positively correlated with shoot dry weight. RLD and root activity in the 40–120 cm soil layer was highest in the W4N2 treatments. Therefore increased water consumption in the deep soil layers resulted in increased shoot dry weight, seed cotton yield and WUE. Our data can be used to develop a water-N management strategy for optimal cotton yield and high WUE.

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“…Tuomela et al [83] determined that the thermophilic phase is fundamental for faster lignocellulose degradation with increasing temperatures. Therefore, it can be concluded that the there is an inverse relationship between the fiber properties and the physical, microbial properties of soil [84]. Soil compaction decreases in macroporosity, and eventually leads to increase bulk density.…”

Section: Propertiesmentioning

confidence: 97%