closely associated with P deficiency, and P may be an effective nutrient facilitating the detoxification of excess Al 3+ under low pH ( Maejima et al., 2014 ). Many studies on Al tolerance mechanisms have shown that Al-induced root organic acid (OA
). However, the low mobility of some ions does not address localized nutrient deficiency in roots infected with C Las ( Johnson et al., 2014 ). The use of polymer-coated or clay-coated products as an alternative to traditional fertilizer application
solution pH and thus limited nutrient availability and uptake. By 8 WAT, all cultivars grown in substrates incorporated with DL+HL exhibited chlorosis (yellowing) and interveinal chlorosis, which is speculated to be high pH–induced Fe deficiency ( Fig. 4
, in a peat-based organic mix was insufficient to maintain a greenhouse tomato crop for more than 1 month without showing visible tissue nutrient deficiencies and reduced yield. A supplemental fish-based or plant-based liquid feed containing N and P was
disrupts plant nutrient balance that might cause plant nutrient deficiency or toxicity ( Munns and Tester, 2008 ); however, we did not observe any nutrient deficiency or toxicity induced by salinity stress in this study. In conclusion, saline solution
agricultural acres, respectively. These watersheds are considered impaired by agricultural contaminants such as nutrients, salts, and pesticides ( U.S. Environmental Protection Agency, 2013 ). In 1967, California formed the State Water Resources Control Board
visual symptoms of nutrient deficiency Substrate affected substrate N concentration at the end-of-production [ P ≤ 0.01 ( Table 1 )], where N was lowest for peat:coir (118.3 ppm N) and greatest for peat (201.1 ppm N) and peat:wood (182.8 ppm N), with
Iron (Fe) plays an important role in several basic physiological functions and is an important factor involved in pear ( Pyrus spp.) tree growth and development. Iron deficiency chlorosis (IDC) is a worldwide problem that began in the 1930s
Abstract
Although nutrient deficiency symptoms for widely grown dicotyledonous crops are well-known and generally similar for a given element (5), deficiency symptoms of many elements on tropical monocotyledonous ornamental plants are unknown (4). Symptoms often differ dramatically among these taxa and may often be attributed to non-nutritional causes.
Abstract
Poinsettia (Euphorbia pulcherrima Willd. ex Klotz) in nutrient culture developed Mg deficiency symptoms at 0, 1 and 2 ppm Mg in the solution. A high K level caused a depression of leaf Mg concentration and the appearance of deficiency symptoms with 5 ppm Mg in the solution. The Mg concentration of leaves from 3 stem positions reflected changes in Mg supply. The results emphasize the importance of recognizing the K –Mg relationship when interpreting results of soil and foliar nutrient analyses.