Vol. 5, Issue 4 (2017)
Impact of crop residues, green manuring and gypsum on nutrient status in salt affected purna valley soils
Author(s): J Ravinder, VK Kharche and NM Konde
Abstract: The field experiments on cotton were conducted on selected farmers’ fields in Purna valley during 2013-14.The treatments comprised of five different green manures, two crop residues, gypsum and control. There were nine treatments replicated on three farmers’ fields. The design of experiment was randomized block design, replicated three times, where one farmer was treated as one replication. Salt affected soils limit crop yields around the world. Knowledge of how nutrient availability is affected in plants growing on salt affected soils is important in adopting appropriate management practices to satisfy plants’ nutritional requirements and improve yields to meet food demands of increasing world populations. In the salt affected environment plants required to absorb essential nutrients from a dilute source in the presence of highly concentrated nonessential nutrients. Nutrient uptake and use efficiency in salt affected soils is low due to salt stress and negative interactions with cations and anions present in high concentrations. Hence, a higher amount of nutrients is necessary in salt affected soils compared to normal soils. So in these view our treatments were found beneficial as that of gypsum in physical properties of the soils in addition to gradual chemical amelioration. Although considerable improvement in chemical properties has been observed under gypsum indicating reduction in pH from the average initial of 8.31 to 8.19 and ESP from average initial of 11.15 to 7.12, but simultaneously the significant reduction has also been observed under organic amendments like dhaincha and sunhemp. Similarly significantly highest available soil N status was recorded in dhaincha in situ green manuring. However, the use of crop residues and green manures have shown relatively more available N status, which was superior over gypsum. In same manner of crop resiues and green manuring increased the available P and under organic amendments average available K status of 439.9 kg ha-1 over average initial value of 393.2 kg ha-. The organic amendments showed their potential not only for slow reclamation but also for improvement in characteristics of sodic soils. The organic amendments like dhaincha and sunhemp were found equally beneficial for obtaining crop yields as that of gypsum besides gradual soil reclamation.
Pages: 1846-1850 | 699 Views 24 Downloads
How to cite this article:
J Ravinder, VK Kharche, NM Konde. Impact of crop residues, green manuring and gypsum on nutrient status in salt affected purna valley soils. Int J Chem Stud 2017;5(4):1846-1850.