Record Details

Agronomic assessment of phosphorus efficacy for potato (Solanum tuberosum L) under legume intercrops

CGSpace

View Archive Info
 
 
Field Value
 
Title Agronomic assessment of phosphorus efficacy for potato (Solanum tuberosum L) under legume intercrops
 
Creator Gitari, H.I.
Nyawade, S.
Kamau, S.
Karanja, N.
Gachene, C.K.K.
Schulte-Geldermann, Elmar
 
Subject intercropping
phosphorus
harvest index
legumes
potatoes
physiology
 
Description Phosphorus (P) is an essential element and its efficient use is of global importance. This study evaluated the effect of growing potato under legume intercrops on P uptake and use efficiency indices: P harvest index (PHI), P uptake efficiency (PuPE), P partial factor productivity (PPFP) and P partial balance (PPB). The experiment was carried out for four consecutive seasons with treatments comprising potato cultivated under legume intercrops: none (T1), dolichos (Lablab purpureus L) (T2), peas (Pisum sativum L) (T3) and beans (Phaseolus vulgaris L) (T4). Across the seasons, the mean haulm P uptake for T2 (6.7 kg P ha−1), T4 (5.5) and T3 (4.5) were 6%, 23% and 36% lower than that observed in T1 (7.1 kg P ha−1), respectively. On the other hand, tuber P uptake was highest in T1 (21.8 kg P ha−1) and T2 (21.3 kg P ha−1) and were significantly higher than 13.2 kg P ha−1 in T3 and 15.1 kg P ha−1 in T4. This had a profound effect on PuPE, which was equally highest in T1 (0.26 kg total P uptake kg−1 P supply) and T2 (0.25) and lowest in T3 (0.16) and T4 (0.18). Similarly, PPFP, PHI and PPB followed a similar trend, with highest values in T1 (57 kg tuber dry matter yield kg−1 P supply, 76.4 kg tuber P uptake kg−1 total plant’s P uptake and 0.20 kg tuber P uptake kg−1 P supply, respectively). Among the tested legume intercrops, dolichos competed least for P with the main crop (potato) hence it can be integrated into potato-based cropping systems without compromising potato tuber yield.
 
Date 2019-12-18
2019-12-20T01:53:41Z
2019-12-20T01:53:41Z
 
Type Journal Article
 
Identifier Gitari, H.I.; Nyawade, S.; Kamau, S.; Karanja, N.N.; Gachene, C.K.K.; Schulte-Geldermann, E. 2020. Agronomic assessment of phosphorus efficacy for potato (Solanum tuberosum L) under legume intercrops. Journal of Plant Nutrition. ISSN 0190-4167. 15 p.
0190-4167
https://hdl.handle.net/10568/106273
https://doi.org/10.1080/01904167.2019.1702202
 
Language en
 
Rights Copyrighted; all rights reserved
Limited Access
 
Format p. 864-878
 
Publisher Informa UK Limited
 
Source Journal of Plant Nutrition