Integrated Fertilizer Prescriptions for Transgenic Cotton Hybrids under Rainfed Situation through Inductive cum Targeted Yield Model on Vertisol

Sherene, T.; Santhi, R.; Kavimani, R.; Kumar, K. Bharathi

doi:10.1080/00103624.2016.1206918

Cited by 6 publications

(3 citation statements)

References 2 publications

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“…In the current study, the difference in hybrid castor seed yield and NPK uptake was due to the presence of variation on soil available nutrient status of N, P and K. The variation is the prerequisite for developing the fertilizer prescription equations using basic parameters for desired yield target. Sherene et al (2016) and Santhi et al (2011) reported similar existence of an operational range of available N, P and K for cotton under vertisol and beetroot on Alfisol.…”

Section: Inorganic Fertilizer Alonementioning

confidence: 73%

Soil test crop response based integrated plant nutrition system for hybrid castor on an Alfisol

Abishek

Santhi

Maragatham

et al. 2022

ASD

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Background: In the era of precision agriculture, application of fertilizer based on soil testing is an essential tool to prescribe nutrient doses for crops to improve nutrient use efficiency and yield of hybrid castor. Methods: Field experiment was conducted in 2021 at the Tapioca and Castor Research station, Yethapur, region near Salem city, Tamil Nadu, India (11035’N, 78029’E). By adopting inductive cum targeted yield model fertilizer prescription equation (FPEs) were developed for hybrid castor under irrigated condition for Alfisol soil order. Initially soil fertility gradient were established with respect to soil available N, P and K nutrients and twenty four treatment were imposed in three fertility strips under factorial randomized design. The basic parameters [nutrient requirement (NR) and nutrients contributions from soil (Cs), fertilizer (Cf) and farmyard manure (Co)] were calculated from the field experimental data. Result: The nutrient required for producing one quintal of hybrid castor seed yield was evaluated as 3.20 kg of nitrogen, 1.23 kg of phosphorus pentoxide (P2O5) and 3.28 kg of potassium oxide (K2O). The study revealed that soil nutrient contribution was high in case of available phosphorus (41.87%), available nitrogen (21.56%) and available potassium (19.12%) respectively toward P, N and K nutrient uptake by hybrid castor. The nutrient contribution from farmyard manure (Co) towards the total uptake was 21.40% of N, 10.35% of P2O5 and 26.06% of K2O respectively. Using basic data, FPEs were developed for hybrid castor and ready reckoner were developed for operational range of soil test values for desired yield target under NPK alone and IPNS (NPK and FYM).

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Section: Inorganic Fertilizer Alonementioning

confidence: 73%

Soil test crop response based integrated plant nutrition system for hybrid castor on an Alfisol

Abishek

Santhi

Maragatham

et al. 2022

ASD

Self Cite

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“…Similarly, phosphorus uptake followed a similar pattern, with values of 6.30 kg/ha, 17.46 kg/ha, and 20.49 kg/ha in strips I, II, and III, respectively. Potassium uptake mirrored this trend, with quantities of 35.14 kg/ha, 68.67 kg/ha, and 74.30 kg/ha recorded in strips I, II, and III, respectively (Sherene et al,2016) [3].…”

Section: Green Fodder Yield and Nutrient Uptakementioning

confidence: 68%

Studies on Creation of Operational Range of Soil Fertility to Evolve Fertilizer Prescription Equations under Soil Test Crop Response Correlation Studies on Rainfed Bt Cotton

Rajammal, T,

Maragatham,

Santhi

2024

Adv. Res.

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To derive fertilizer prescription equations for rainfed Bt cotton within the framework of Soil Test Crop Response (STCR) studies, a meticulously designed gradient experiment was executed at the esteemed Cotton Research Station located in Perambalur district, Tamil Nadu, India. Employing a targeted yield methodology, the investigation centered on the cultivation of fodder sorghum as the exhaustive crop during the kharif season. Adhering to an inductive-cum-yield target approach, the experimental plot was meticulously partitioned into three equitably-sized strips, each delineating a distinct fertility gradient. These gradients were meticulously established through the application of varying fertilizer regimes: N0P0K0, N1P1K1, and N2P2K2. Notably, the recommended fertilizer regimen (N1P1K1) encompassed precise quantities of essential nutrients, specifically 60 kg ha-1 of nitrogen (N), 345 kg ha-1 of phosphorus pentoxide (P2O5), and 96 kg ha-1 of potassium oxide (K2O). Fodder sorghum emerged as the strategic choice for the exhaustive crop, strategically cultivated to expedite the transformation of applied fertilizers within the soil matrix, leveraging both plant and microbial processes. The overarching objective of this methodological approach was to establish a discernible operational range of soil fertility across the designated fertility strips. This was meticulously evaluated through meticulous analyses of variations in fodder yield uptake and pertinent soil test values.

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“…For instance, agronomic management such as planting dates, varieties selection, irrigation and residue management have been evaluated as climate change adaptation measures in speci c regions (Brüssow et al, 2019;Challinor et al, 2014;Karapinar and Özertan, 2020;Shi et al, 2019). Secondly, insight in the impacts of climate change on water limited yield is also relevant as it is often used to derive rainfed target yield levels (mostly set at 80% of Yw) for use in fertilizer recommendations (Sherene et al, 2016). Recommended fertilizer doses are usually designed to ful l crop nutrient requirement to reach a target yield given critical soil nutrient thresholds.…”

Section: Introductionmentioning

confidence: 99%

Climate change impacts on rainfed maize yields in Zambia under conventional and optimized crop management

Siatwiinda

Supit

Hove

et al. 2021

Preprint

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Maize production in Zambia is characterized by significant yield gaps attributed to nutrient management and climate change threatens to widen these gaps unless agronomic management is optimized. Insights in the impacts of climate change on maize yields and the potential to mitigate negative impacts by crop management is currently lacking for Zambia. Using five Global Circulation models and the WOFOST crop model, we assessed expected climate change and the impacts on maize yields at a 0.5° × 0.5° spatial resolution for RCP 4.5 and RCP 8.5 scenarios. Impacts were assessed for two future periods (i.e. near future: 2035–2066 and far future: 2065–2096) in comparison with a reference period (1971–2001). The average surface temperature and summer days (above 30°C) are projected to increase strongly in the southern and western regions. Precipitation is expected to decline, except in the northern regions while the number of wet days decline everywhere, indicating a shortening growing season. The risk of crop failure in western and southern regions increases due to dry spells and heat stress while crops in the northern regions will be threatened by flooding or waterlogging due to heavy precipitation. The simulated decline in the water limited and water- and nutrient- limited maize yields varied from ca 15–20% in the near future and from ca 20–40% in the far future, mainly due to the expected temperature increases. Optimizing management by adjusting planting dates and maize varieties can counteract these impacts by 6–29%. Quantitatively, the existing gaps between water limited yields and nutrient limited maize yields are substantially larger than the expected yield decline due to climate change. Improved nutrient management is therefore crucial to avoid crop yield decline and might even increase crop yields in Zambia.

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Integrated Fertilizer Prescriptions for Transgenic Cotton Hybrids under Rainfed Situation through Inductive cum Targeted Yield Model on Vertisol

Cited by 6 publications

References 2 publications

Soil test crop response based integrated plant nutrition system for hybrid castor on an Alfisol

Soil test crop response based integrated plant nutrition system for hybrid castor on an Alfisol

Studies on Creation of Operational Range of Soil Fertility to Evolve Fertilizer Prescription Equations under Soil Test Crop Response Correlation Studies on Rainfed Bt Cotton

Climate change impacts on rainfed maize yields in Zambia under conventional and optimized crop management

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