Traditional pattern of cashew cultivation : A lesson from Sumenep-Madura, Indonesia The growth reduction in dwarf cashew is intensified when exposure to salt stress is longer and it is more associated with uptake and excessive accumulation of Cl- than Na+. The Na+ and Cl-fluxes increased with salinity however Cl- seemed to be more harmful to plants, since this ion has been absorbed in a higher ratio than Na+. The Na+ and Cl- contents increased in all plant tissues, while the NO3 - content was reduced and K+ content has not changed by salinity. The cashew growth was affected by salinity and by the exposure time to this stress, and the plants subjected to 60 days of stress were the most affected by NaCl. It was determined the shoot dry masses (SDM and root (RDM, the SDM/RDM ratio, Na+, K+, Cl- and NO3 - contents and the Na+ and Cl- fluxes for whole plant in the period between two times of exposure to salt stress.

Plants were harvested after 30 and 60 days under salt stress. For this purpose, cashew nuts (CCP 06 clone were sown in plastic trays containing vermiculite moistened with nutrient solution containing NaCl with electrical conductivities ranging from 0.0 to 18.0 dS m-1. Growth and ion accumulation in dwarf cashew plants at different times of salinity exposureįull Text Available This work aimed to evaluate the influence of salt stress exposition on growth and ion accumulation in dwarf cashew plants. Management practices of soil surface mulching using organic wastes and cover crops under Soil nutrient content variation across the plantations with age of establishment will necessitate the need for consistent routine soil nutrient assessment for proper and balanced soil nutrient supply to the crops, for healthy crop growth and optimum yield.

The ECEC showed that the soil needs to be improved upon for sustainable productivity. Hence, adequate soil N did not translate the same availability to the crops. The high soil Mg/K ratio of 8.7- 22.3 as against the established value of 2.0 might have resulted in gross nutrient imbalance which must have affected the absorption and utilization of other nutrients. Leaf K was low for cocoa and coffee plants, leaf Ca was low for the young cashew plants, while leaf Mg was low for the young cocoa and old cashew. Leaf N was below critical for all the crops. However, the soil ECEC increased with the increasing of calcium contents. The young cashew plot was low in N content but adequate for other plots. The soils varied in their nutrient contents, with soil P for the old cocoa, young coffee and cashew plantations far below critical values. Results indicated that the soils were texturally sandy clay loam and acidic. Data were compared with the corresponding soil and foliar critical nutrient values for each crop. Leaf samples were analyzed for N, P, K, Ca, Mg and Na. The samples were analyzed using standard procedures for sand, silt, clay, pH (H2O, electrical conductivity (EC, total N, available P, K, Ca, Mg, Na, and Effective Cation Exchange Capacity (ECEC. Soil and crop leaf samples were collected from each plantation using a random sampling technique.

Soil Nutrient Dynamics under Old and Young Cocoa, Coffee and Cashew Plantations at Uhonmora, Edo State, Nigeriaĭirectory of Open Access Journals (Sweden)įull Text Available A study was conducted to assess nutrient dynamics of soils under old and young cocoa, coffee and cashew plantations and the leaf nutrient contents of the crops at Uhonmora, Edo State, Nigeria for proper cultural and soil fertility management of the plantations.

Cashew plant blindness