Sokoine University of Agriculture

Fertility of soils cropped to rice (oryza sativa, L.) in Eastern Same District, Kilimanjaro Region, Tanzania.

Show simple item record Amur, N. Semu, E 2016-11-08T10:12:46Z 2016-11-08T10:12:46Z 2006
dc.description.abstract Decline in soil fertility has been found to be the main cause of low rice yields in many soils of Tanzania. The objective of this study was to evaluate the effects of N, P, K and Zn on their uptake by lowland rice (Oryza sativa, L.) grown in nutrient-deficient soils of Same district. Three bulk soil samples, which were low in some macro- and micro-nutrients, were collected from Kisiwani, Ndungu and Kihurio, and used for pot experiments. The response of rice (Oryza sativa, L., cv super SSD5) to N, P, K and Zn was assessed in a glasshouse experiment where plants were grown for 56 days. Plant samples were analysed for N, P, K, Ca, Mg, Zn and Fe after digestion with HNO 3-H20 2. The results showed that N, P and K increased uptake of each mineral nutrient by rice plants, in all the soils used. For example, N alone increased N uptake from 5.8 to 28.4, 8.3 to 37.0, and 3.6 to 14.2 mg/plant in Ndungu, Mbugani and Kimunyu soils, respectively. Zinc, in addition to N, P, and K, increased the nutrient uptake even further. The uptake of each nutrient applied was consistent with the increase in dry matter yields and nutrient concentrations in rice shoots reported earlier. It was thus confirmed that these soils were deficient in N, P and Zn. Iron was required in the Kisiwani (Mbugani) soils, which were severely deficient of this element. en_US
dc.language.iso en en_US
dc.publisher UNISWA Journal of Agriculture en_US
dc.subject Nutrient uptake en_US
dc.subject Phosphorus en_US
dc.subject Potassium en_US
dc.subject Eastern Same District en_US
dc.subject Kilimanjaro Region en_US
dc.subject Rice production en_US
dc.subject Soil fertility en_US
dc.title Fertility of soils cropped to rice (oryza sativa, L.) in Eastern Same District, Kilimanjaro Region, Tanzania. en_US
dc.title.alternative Nutrient uptake in response to nitrogen, phosphorus, potassium, zinc and iron en_US
dc.type Article en_US

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