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Subject: Soil and Water Engineering × Author: Krishan Kanahiya × Start date: 2021 × Type: Thesis × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Study of nitrogen fertigation through drip irrigation on capsicum crop
    (CCSHAU, Hisar, 2021-07) Krishan Kanahiya; Mukesh Kumar
    Capsicum is a nutrition vegetable crop grown throughout India. Considering the water shortage and high demands of ground water, drip system of irrigation is best suited for capsicum crop. Nitrogen is an essential element for the plant growth and the major source of nitrogen is urea, which is readily available to the farmers. Nitrogen fertigation with drip irrigation saves the nitrogen losses and reduces its leaching. A study was conducted to examine the effect of nitrogen fertigation levels and fertigaion frequency on yield and yield parameters of drip irrigated capsicum crop. Experiment was carried out in 27 micro plots (nine treatments with three replications) constructed in the Research Farm of Department of Vegetable Science, CCSHAU, Hisar, (Haryana), India. The treatments comprises of three fertigation levels (75, 100 and 125% of RDN) and three fertigation frequencies (all time nutrition, weekly and fortnightly). Maximum fruit yield (178.40 q/ha) was obtained under all time nutrition fertigation with 125% RDN (FL3FF1), followed by 100% RDN (FL2FF1) having 174.27 q/ha fruit yield. In all time nutrition fertigation, 33.7% and 34.5% more yield was obtained in FL2FF1and FL3FF1 treatment in comparison to FL1FF1 treatments. Maximum plant height was recorded for all time nutrition fertigation with 125% of RDN and the number of branches, average fruit width and length were recorded maximum at 125% of RDN with all time nutrition ferigation. Fruit weight and number of fruits per plant maximum at 125% RDN followed by 100% RDN under all time nutrition fertigation. Outcomes of study showed that the treatment FL3FF1 recorded maximum water use efficiency (3.72 kg m-3) followed by 100% RDN (3.63 kg m-3), while, minimum value (3.19 kg m-3) was recorded in FL1FF3 treatment. Maximum NUE (134.80kg of capsicum per kg of Nitrogen) was recorded under all time nutrition fertigation with 75% RDN in FL1FF1 treatment and minimum NUE (76.05 kg of capsicum per kg of Nitrogen) was recorded at 125% RDN with fortnightly fertigation. The highest net returns (Rs. 3,78,401) with benefit cost ratio (2.41) for capsicum crop were obtained at 125% of fertigation level with all time nutrition frequency followed by 100% of fertigatiion level.