EFFICIENT USE OF WATER AND FERTILIZERS THROUGH DRIP FERTIGATION IN POTATO
2006; Volume: 33; Linguagem: Inglês
ISSN
0970-8235
AutoresG. V. Sasani, C. K. Patel, RA Patel, N. H. Patel, S. H. Patel,
Tópico(s)Potato Plant Research
ResumoA field experiment was conducted during rabi seasons of 1996-97 to 1998-99 at Deesa to evaluate drip fertigation for water and fertilizer economy in relation to potato tuber yield. Application of 80% of recommended dose of N and K 2 O through drip fertigation was found to be the most efficient in obtaining significantly higher total tuber yield (420 q/ha) as compared to application of recommended dose of N and K 2 O through furrow irrigation. Fertigation also resulted in better fertilizer use efficiency by savings 40% water and labour. viz., 100, 80, 60 and 40% of recommended dose of N and K 2 O through drip fertigation designated as T 1 , T 2 , T 3 and T 4 , respectively, along with control (100% of recommended dose of NPK T 5 (220-110-220 NPK kg/ha) applied through soil application). Half dose of N and K 2 O and full dose of P 2 O 5 were applied in drip irrigation, whereas, for surface irrigation, half dose of N and full dose of P 2 O 5 and K 2 O were applied as basal dose at the time of planting. Remaining half dose of N was applied at 30-35 days after planting in the surface irrigation treatment, while in case of the drip irrigation, the remaining half doses of N and K 2 O were given through 'venturi' in the form of urea and muriate of potash solution, respectively in four equal splits at 30, 40, 50 and 60 days after planting. In the drip irrigated crop, lateral lines were laid out 50 cm apart in the middle of two rows. The distance between two drippers was 60 cm and the drippers had on average
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