Quantitative and Qualitative Traits of Sunflower Genotypes as Influenced by Nitrogen Application through Fertigation

Fertigation is the application of dissolved fertilizer especially nitrogen through irrigation for correcting nutrient deficiencies of plants. A field study was conducted in Tandojam for two consecutive years in autumn 2018 and 2019. The experiment was replicated thrice in randomized complete block d...

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Bibliographic Details
Published in:Pakistan journal of agricultural research 2022, Vol.35 (1), p.5
Main Authors: Chandio, Imran Ali, Kandhro, Muhammad Nawaz, Jogi, Qamaruddin, Jamro, Ghulam Murtaza, Channa, Siraj Ahmed
Format: Article
Language:English
Subjects:
Agricultural production
Analytical chemistry
Broadcasting
Climatic conditions
Crop yield
Crops
Data analysis
Fertigation
Fertilizers
Genotype & phenotype
Genotypes
Helianthus
Irrigation
Nitrogen
Oils & fats
Oilseeds
Seeds
Sunflowers
Vegetable oils
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Summary:Fertigation is the application of dissolved fertilizer especially nitrogen through irrigation for correcting nutrient deficiencies of plants. A field study was conducted in Tandojam for two consecutive years in autumn 2018 and 2019. The experiment was replicated thrice in randomized complete block design. Different doses of nitrogen as broadcasting and fertigation (0, 75, 100, 125 kg N ha-1 in two and three equal splits given at sowing time, 1 st, 2 nd and 3 rd irrigations, respectively) were applied to two sunflower genotypes (HO-1 and Hysun-39). Data analysis revealed nitrogen fertigation, genotypes and their interaction substantially (P≤0.05) affected growth and yield traits of sunflower. Greater seed yield (kg ha-1) and the oil content (%) were documented in N 10 = 125 kg N ha-1: three splits ( broadcasting at sowing time + fertigation- at 1 st and at 3 rd irrigation), followed by N 8 = 125 kg N ha-1: two splits (½ broadcasting at sowing time + ½ as fertigation at 2 nd irrigation). In between genotypes, higher seed yield (kg ha-1) and oil content (%) were recorded in HO-1 as compared to Hysun-39. As regards interactions, enhanced seed yield (kg ha-1) and oil content (%) were registered in the interaction of N 10 = 125 kg N ha-1: three splits ( broadcast at sowing time + fertigation- at 1 st and at 3 rd irrigation) × HO-1. It was concluded from the results that nitrogen dose should be divided into three splits and applied at sowing time through broadcasting and fertigated at 1 st and 2 nd irrigation, respectively. Variety HO-1 should be preferred to obtain enhanced sunflower seed yield under Tandojam climatic conditions.
ISSN:0251-0480
0251-0480
2227-8311
DOI:10.17582/journal.pjar/2022/35.1.5.14