Most corn planted on tropical acidic soils suffers substantial yield loss caused by low crop phosphorus (P) uptake. Humic acid is recommended to increase P uptake since it capable of competing with be bound soil adsorption complexes. extracted from composted manure (MHA) a good alternative humic because more reactive and has higher complexation ability compared leonardite. Therefore, the effect...

High ultraviolet-B (UV-B; 290-320 nm wavelength) radiation may signifi cantly contribute to the quality decline and death of kentucky bluegrass (Poa pratensis L.) sod during summer transplanting. Antioxidants and protective pigments may be involved in plant defense against oxidative stress caused by UV-B. Selected exogenous hormones may alleviate UV-B damage by upregulating plant defense system...