Growth, water and nutrient status of plants in relation to patterns of variations in concentrations of dry matter and nutrient elements in base-to-top leaves

1973 ◽  
Vol 39 (3) ◽  
pp. 675-686 ◽  
Author(s):  
Bodil Friis-Nielsen
Keyword(s):  
Dry Matter ◽  
Nutrient Status ◽  
Nutrient Elements

Effect of cocoa pod ash on the growth of maize

1994 ◽  
Vol 122 (1) ◽  
pp. 31-33 ◽  
Author(s):  
H. K. Adu-Dapaah ◽  
J. Cobbina ◽  
E. O. Asare
Keyword(s):  
Zea Mays ◽  
Rainy Season ◽  
Dry Matter ◽  
Field Experiments ◽  
Nutrient Elements ◽  
Agronomic Efficiency ◽  
Arable Crops ◽  
Optimum Rate ◽  
Major Nutrient ◽  
Muriate Of Potash

SUMMARYPot and field experiments were conducted at the Faculty of Agriculture Arable Crops Farm, Kumasi, Ghana during the major rainy season to compare the agronomic efficiency of potassium in cocoa pod ash with that of muriate of potash and to determine the optimum rate of application of cocoa pod ash to maize (Zea mays L. cv. La Posta). Results from the two experiments indicated that the application of 90 kg N/ha and 67 kg P2 O5/ha did not increase shoot dry matter (DM) yield over the control. However, significant increases in DM yield over the control were obtained when N and P were applied together with 56 kg K2O/ha, demonstrating the complementarity of the major nutrient elements N, P and K. Shoot and root DM increased with increasing application of cocoa pod ash. Application of 140 kg/ha cocoa pod as (equivalent to 56 kg K2O/ha) produced the same DM and shoot potassium yields as 56 kg K2O/ha as muriate of potash. The optimum rate of application of cocoa pod ash was 280 kg/ha (112 kg K2O/ha).

The physiological assessment of the nutrient status of plants. IV. The effect of the interaction between nutrient elements of leaf area responses

1967 ◽  
Vol 18 (2) ◽  
pp. 223 ◽  
Author(s):  
D Bouma ◽  
EJ Dowling
Keyword(s):  
Leaf Area ◽  
Subterranean Clover ◽  
Nutrient Status ◽  
Simple Relation ◽  
Qualitative Assessment ◽  
Nutrient Elements ◽  
Response Patterns ◽  
Physiological Assessment ◽  
Area Response ◽  
Complete Solutions

Experiments were carried out with subterranean clover in water cultures to study the effect of interactions between phosphorus, sulphur, and nitrogen. These elements were varied in pairs, and leaf area responses measured after transfer to complete solutions and to solutions without one of the two previously varied elements. Leaf area responses after transfer of plants deficient in phosphorus as well as in sulphur revealed both deficiencies when they had been of approximately equal intensity. When elements were deficient to differing degrees, leaf area responses depended on the relative intensities of the deficiencies. With deficiencies of sufficiently differing intensities, leaf area response patterns after transfer showed a deficiency of only one element because its supply had been low enough to mask the effect of the other deficiency. Transfer of plants deficient in only one element confirmed that there is no simple relation between the nitrogen status of the plant and the induced leaf area responses. The results also confirmed the feasibility of at least a qualitative assessment of the phosphorus or the sulphur status of plants.

The plant nutrient status of granite soils from the Bendemeer area of New South Wales

1966 ◽  
Vol 6 (20) ◽  
pp. 17 ◽  
Author(s):  
F McMullen
Keyword(s):  
Dry Matter ◽  
New South ◽  
Soil Phosphorus ◽  
New South Wales ◽  
Trifolium Subterraneum ◽  
Nutrient Status ◽  
Calcium Sulphate ◽  
Plant Nutrient ◽  
First Order ◽  
South Wales

A factorial glasshouse pot trial was used to examine the supply of phosphorus, boron, zinc, copper, cobalt, magnesium, molybdenum, potassium, and manganese, to the Dwalganup strain of Trifolium subterraneum L. growing in virgin granite soils from Bendemeer, New South Wales. Calcium sulphate was applied as a basal nutrient. Significant dry matter responses were obtained on all four virgin soils to the application of phosphorus, molybdenum, and potassium; to copper on two soils; and to boron and cobalt on one soil. Phosphorus was so deficient that responses to other plant nutrients did not occur in its absence. On all soils, significant first order interactions were recorded between phosphorus and other deficient elements. In addition, significant interactions were recorded between molybdenum and magnesium, copper and molybdenum, boron and molybdenum, copper and cobalt, and potassium and molybdenum.

Influence of phosphorus and bio-fertilizers on growth and yield of cowpea [Vigna unguiculata (L.) Walp.] in acidic soil of NEH region of India

2017 ◽  
Author(s):  
M. A. Nadeem ◽  
Vikas Singh ◽  
R. K. Dubey ◽  
A. K. Pandey ◽  
Barun Singh ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Vigna Unguiculata ◽  
Dry Matter ◽  
Soil Nutrient ◽  
Nutrient Status ◽  
Growth And Yield ◽  
Soil Nutrient Status ◽  
Area Index ◽  
Available N ◽  
Pod Yield

A field experiment was carried out on cowpea (Vigna unguiculata (L.) variety Kashi Kanchan during summer season at the experimental farm, department of Vegetable Science, College of Horticulture and Forestry, Central Agricultural University, Pasighat, Arunachal Pradesh. The experiment was laid out in factorial complete randomized block design with 12 treatments i.e. three levels of phosphorus [control 0 kg(P0), 20 kg (P1) and 40 kg (P2) /ha] and four levels of bio-fertilizer [control (B0), Rhizobium10 ml/kg seed(B1), PSB 10 ml/kg seed (B2) and Rhizobium + PSB both 10 ml/kg seed (B3)] with three replications. The uniform dose of nitrogen (N) and potassium (K) @ 20 kg/ha along with 10 t/ha FYM (Farm Yard Manure) were applied to all the treatments. Result indicated that the application of P2 (40 kg P/ha) significantly increased the plant height, leaf area index, stem girth, number of nodules per plant, number of branches per plant , total dry matter, pod yield, available soil nutrient status viz., pH, N, P, K, organic carbon and NPK content in plant after harvesting. Similarly, seed inoculation with B3 (Rhizobium + PSB) significantly enhanced the growth, yield, soil nutrient status and nutrient content in plant over single inoculation of Rhizobium and PSB. Combined inoculation of seed with Rhizobium + PSB (B3) along with 40 kg P/ha (P2) significantly increased the stem girth (1.84 cm), total dry matter (13.91g/plant), green pod yield (196.37g/plant and 120.90q/ha), soil nutrient status viz., pH(6.20), available N (370.89 kg/ha), available P (38.57 kg/ha), available K (168.77 kg/ha), organic carbon (2.80%) and N, P and K (0.17%, 0.16% and 0.39%) content over rest of treatment combination.

scholarly journals Interactions between leaf macronutrients, micronutrients and soil properties in pistachio (Pistacia vera L.) orchards

2013 ◽  
Vol 72 (2) ◽  
pp. 295-310 ◽  
Author(s):  
Prodromos Koukoulakis ◽  
Christos Chatzissavvidis ◽  
Aristotelis Papadopoulos ◽  
Dimitrios Pontikis
Keyword(s):  
Dry Matter ◽  
Chemical Properties ◽  
Nutrient Status ◽  
Soil Chemical Properties ◽  
Leaf Analysis ◽  
Promote Plant Growth ◽  
Macro And Micronutrients ◽  
Almost All ◽  
Plant Available P ◽  
Pistachio Trees

Abstract - The interactions between: (i) leaf dry matter macronutrietns, micronutrients and soil chemical properties, (ii) leaf macro- and micronutrients, (iii) soil macro- and micronutrients and (iv) soil chemical properties, and soil micro- and macronutrients in 50 pistachio orchards were investigated in leaves and soils by means of regression analysis. Most of the soils were deficient in plant-available P, Zn, Mn, Fe, and B, while they were excessively supplied with Cu. Leaf analysis showed that most of the trees were sufficient in K, Mg, Mn and B, but deficient in N, P and Fe, and excessive in Zn and Cu. It was found that almost all the significant elemental interactions occurring in pistachio leaves or soils were synergistic, contributing considerable quantities of available nutrients and, therefore, improving the nutrient status of pistachio trees, and the level of soil fertility. On the other hand, the interactions between K and Mg in leaves, and between soil pH and leaf N or soil Fe, Mn and B, were antagonistic. It is suggested that these results must be taken into account during fertilization of pistachio trees, in order to avoid nutritional disorders and to promote plant growth, productivity and nut quality.

scholarly journals Pasture response to fertiliser inputs under dairy grazing

1996 ◽  
pp. 123-127
Author(s):  
J.S. Rowarth ◽  
C.G. Pennell ◽  
T.J. Fraser ◽  
D.B. Baird
Keyword(s):  
Festuca Arundinacea ◽  
Dry Matter ◽  
Maximum Yield ◽  
Nutrient Status ◽  
Limiting Factors ◽  
Dry Matter Production ◽  
Grass Species ◽  
Olsen P ◽  
Matter Production ◽  
Prairie Grass

Conversion of sheep and beef farms into dairy units has resulted in research on appropriate fertiliser rates and pasture species to achieve maximum productivity in minimum time. An onfarm trial involving five different mixtures of pasture species (based on fescue, prairie grass, an improved mixture, farmer mixture or original pasture), three rates of nitrogen as urea (0, 50 or 100 kg/ha of N applied half in March and half in August) and four rates of superphosphate (0, 250, 500 or 1000 kg/ha applied annually in March) was established in Canterbury on a Waimakariri sandy silt loam with border-dyke irrigation and an Olsen P of 5 pg/ml. The trial was grazed by dairy cattle as part of the general rotation; plots were not fenced individually. Pasture growth rates were measured pre- and post-grazing using a calibrated pasture probe. Botanical dissections ,were made seasonally and soil samples were taken annually. Pasture dry matter production was greatest from the prairie grass, "improved" mixture and the original pasture, involved often contain a high proportion of annual and perennial, low-producing species. Grass species, nutrient status and management have been identified as the limiting factors in dairy conversion (Kleyngeld & Kleyngeld 1992). Ryegrass and white clover are still the most common species used in pasture renovation (Maloney 1991). However, short-rotation ryegrasses are favoured by some dairy farmers, and in new dairying areas such as Canterbury, optimally producing species may differ from those used in the more traditional North Island dairying areas (Charlton & Belgrave 1992). Nitrogen (N) is recognised as a strategic tool for increasing grass production in winter-spring in summerdry areas (Thomsoneta/. 1991) as well as for extending the milking season for factory supply herds in Southland (Kleyngeld & Kleyngeld 1992). High rates of nitrogen (217 and 324 kg/ha per year) have been found to increase annual net herbage accumulation by 23 and 27%, respectively, in the Waikato, but clover content declined significantly (Harrisetaf. 1994). Maintenance fertiliser requirements have been related to desired stocking rate in the past, based on animal production system and soil type (Computerised Fertiliser Advisory System (CFAS), reaching 13 000,ll 000 and 16 000 kg/ha in years Cornforth & Sinclair 1984). Recently responses in milk one, two and three, respectively; production from yield have been recorded to very high rates (100 kg/ha- IT the fescue increased with time; the 'farmer' mix performed poorly. Nitrogen at 50 kg/ha was generally sufficient to produce maximum yield increases. Increasing superphosphate increased production; this effect decreased with time. Change in Olsen P reflected superphosphate inputs and after three years of differential superphosphate application the Olsen P status was 8, 14, 27 or 42 (corresponding to 0, 250, 500 or 1000 kg/ha superphosphate). Keywords: Bromus wildenowii, dairy conversion, dry matter production Festuca arundinacea, Loliumperenne, nitrogen, Olsen P, superphosphate

Sign in / Sign up

Export Citation Format

Share Document