Assessment of Nitrogen Content, Uptake, Partitioning, and Recovery by Cotton Crop Grown under Surface Irrigation and Drip Fertigation by using Isotopic Technique

Janat, Mussaddak

doi:10.1081/lcss-200030355

Cited by 13 publications

(9 citation statements)

References 28 publications

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“…Inclusion of biofertilizers in the nutrient-management program has found to increase the yield of crops by 5-10%, besides increasing the nutrient-use efficiency. Supply of water at shorter intervals and N and K supply through drip irrigation created a favorable condition, rendering more nutrients available in the soil (Janat 2004;Thind, Aujla, and Buttar 2008). Increasing the soil nutrient availability with drip fertigation as compared to soil application was reported by Malik, Kumar, and Bhandari (1994) and Bharambe et al (1997).…”

Section: Soil-available Nutrient Status After Harvestmentioning

confidence: 80%

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

Jayakumar¹,

Surendran

Manickasundaram

2015

Communications in Soil Science and Plant Analysis

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A field experiment was conducted to assess the effects of drip fertigation with biofertilizers on growth, yield, water, and fertilizer-use efficiency of Bt cotton. The treatments were comprised of drip fertigation with 75, 100, 125, and 150% of recommended dose of fertilizers (RDF) combined with and without biofertilizers as biofertigation, soil application of 100% RDF, and control. Growth, yield attributes, water, and fertilizer-use efficiency of Bt cotton were significantly influenced by drip fertigation treatments. Application of 150% nitrogen (N)-phosphorus (P)-potassium (K) as drip fertigation combined with biofertigation of liquid formulation of azophosmet at 250 ml (10 12 cells ml −1 ) ha −1 was significantly superior over surface irrigation and soil application of 100% NPK and registered the greatest seed cotton yield of 3395 kg ha −1 . The soil fertility status was greater under this treatment when compared to surface irrigation and soil application of fertilizers. It is recommended that drip fertigation of inorganic fertilizers in combination with biofertigation be used as a viable technique to realize the yield potential of Bt cotton and sustenance of soil fertility.

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Section: Soil-available Nutrient Status After Harvestmentioning

confidence: 80%

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

Jayakumar¹,

Surendran

Manickasundaram

2015

Communications in Soil Science and Plant Analysis

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“…5) and were highly N-fertile. Earlier, Janat (2005) had reported low iNUE values (5.3-6.9 and reducing with N fertiliser application) but iNUE was 10.4 for unfertilized cotton.…”

Section: Crop Inue Measurementsmentioning

confidence: 93%

Assessing internal crop nitrogen use efficiency in high-yielding irrigated cotton

Rochester

2010

Nutr Cycl Agroecosyst

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Improving the efficiency of nitrogen (N) fertiliser use is one means of reducing greenhouse gas emissions, particularly in irrigated crops such as cotton (Gossypium hirsutum L.). Internal crop N use efficiency (iNUE) was measured within two N fertiliser rate experiments that covered a wide range of N fertility over six cropping seasons. Crop iNUE was determined by dividing lint yield by crop N uptake. No nutrients other than N limited cotton growth or yield and the crops were irrigated to avoid drought stress. The optimal N fertiliser rates were determined from fitted quadratic functions that related lint yields with N fertiliser rates for each cropping system in each year. When the optimal N fertiliser rate was applied, crop iNUE averaged 12.5 ± 0.2 kg lint/kg crop N uptake. The crop iNUE was then used to determine the degree to which N fertiliser was under or over-applied, with respect to the economic optimum N fertiliser rate. Low iNUE values were associated with excessive N fertiliser application. Crop iNUE was determined in 82 commercial cotton crops in six valleys over the final 4 years of this study. The crop iNUE value was high in 8 fields (10%), optimal in 9 fields (11%) and low in 65 fields (79%). Crop N uptake averaged 247 kg N/ha, yield 2,273 kg lint/ha and crop iNUE 10.1 kg lint/kg crop N uptake for these sites. Averaged over all sites and years, about 49 kg N/ha too much N fertiliser was applied. Apparent N fertiliser recovery by cotton in the N rate experiments ranged from \20% in N-fertile treatments where legume crops had been grown, to more than 60% following winter cereal crops. Information on crop iNUE will enable cotton producers to assess their N fertiliser management and adjust N fertiliser rates for future crops. This study has demonstrated that there is scope to substantially reduce N fertiliser inputs to Australian cotton fields without reducing yields.

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“…Because cotton is considered one of the most important crops in Syria, a lot of efforts are being exerted by many research centers to improve quantity and quality of its yield following different agricultural practices (Janat and Somi 2001;Janat 2004).…”

Section: Introductionmentioning

confidence: 99%

Effect of Potassium Fertilizers on Cotton Yield and Nitrogen Uptake Efficiency in an Aridisol

Khalifa

Al-Chammaa

Al-Ain

2012

Communications in Soil Science and Plant Analysis

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A field experiment was carried out to study the effect of different rates of potassium (K) fertilizer [0, 50, 100, and 150 potassium oxide (K 2 O) ha -1 ] in the presence of increased supply of nitrogen (N) (120, 180, and 240 kg N ha -1 ) on cotton (Gossypium hirsutum L.) yield and the N and K use efficiencies using the 15 N isotopic dilution technique. Potassium fertilizer increased cotton yield, which was significant and more pronounced with the application of N in the high level (N3). The greatest cotton yield (6442 kg ha -1 ) was obtained in N2K3 treatment with an increase of 14% over the control. In addition, K fertilizer significantly increased N uptake efficiency in the N2 and N3 treatments. The greatest N uptake efficiency (98%) was in N2K3 treatment. The greatest K uptake efficiency (42%) was occurred in N3K1 treatment. In conclusion, the use of K fertilizer could be useful when growing cotton in soils of moderate to high N content to improve N uptake efficiency and consequently increase cotton yield.

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Assessment of Nitrogen Content, Uptake, Partitioning, and Recovery by Cotton Crop Grown under Surface Irrigation and Drip Fertigation by using Isotopic Technique

Cited by 13 publications

References 28 publications

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

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

Assessing internal crop nitrogen use efficiency in high-yielding irrigated cotton

Effect of Potassium Fertilizers on Cotton Yield and Nitrogen Uptake Efficiency in an Aridisol

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