From this equation the value of n is easily found. In a similar manner the values of p and k are found. The value of A is then found by substitution of the known values of n, p and k in (8). Equation (4) is then available for calculating the yield to be expected from any amounts of nitrogen, phosphoric acid and potash applied as fertilizers. This matter will be presented in detail in a paper so...

Background and aims – Two new species of Vellozia (Velloziaceae) are here described illustrated, albohexandra V. mellosilvae . These morphologically similar to armata , luteola inselbergae probably belonging the same informal group. Material methods Morphological anatomical descriptions were based on herbarium specimens in situ observations. Standard taxonomy plant anatomy practices applied. Ke...

Symptoms similar to those produced by the phytoplasma disease "Big bud" were observed on tomatoes (Solanum lycopersicum L.) grown in field Mosul city, Iraq. Diseased plants characterized twisting, corrugated, yellowing or reddening of leaves. The sepals flowers acquired hypertrophied form, fused together and created a bell-shaped sterile bud (phyllody) green anthocyanin color. stems lignified, ...

The effect of potash biofertilizer and chemical fertilizer was studied on quantitative and qualitative traits of periwinkle in a factorial experiment based on a Randomized Complete Design with three replications, 48 experimental units, and two factors: (1) different methods of potash bio-fertilizer application at four levels of control (B0), seed inoculation (B1), root inoculation (B2) and seed...