The growth and concentration of elements in leaf blades and petioles of different leaf position and at different growth stage of two tomato varieties (Momotaro and TVR-2) cultured in the nutrient solution of four different nitrate concentration (2, 4, 8, 12 meq/l) were determined by sap analysis. In both varieties, the top weight at mature-green fruit stage of the first cluster was related to nitrate concentration of the petiole directly under the first cluster at fruit setting stage of the first cluster. In all the growth stage, there were no large effect of nitrate concentration in the nutrient solution on the concentration of K, Ca and Mg in the leaf. High nitrate concentration in the nutrient solution tended to decrease the concentration of Ca in leaf blade and petiole at mature-green fruit stage of the first cluster. Nitrate concentration of petiole was influenced by nitrate concentration in the nutrient solution more quickly than that of leaf blade, the difference being noticeable at the early stage of growth. compared with the nitrate concentration of petiole of lower leaves (below first cluster), that of young mature leaves (7-9 nodes from tip) were susceptible to the concentration of nitrate in nutrient solution. At the mature-green fruit stage of the fist cluster, however, nitrate concentration in young leaves fluctuated.

The effects of 3 nutrient solution formulations on the production and quality of the Sim carnation varieties, Raggio d'Sole, White Sim, Manon and Doria grown in rockwool substrate were evaluated over 12 months in northern New South Wales. The mean K: N ratio in mature carnations was 1.39: 1.00, and from the experimental results found, this ratio with 10 percent of the N as ammonium ion can be recommended in a nutrient formulation for commercial hydroponic carnation production in Australia.

Using three varieties of European black currant as an illustration, the possibility to improve the quality of regenerants on Murasige-Skuga nutrient medium and to increase reproduction coefficient by treating apices and microsprouts with electrostatic field of 5 and 10 kV/m intensity is shown

Spray carnation (Dianthus caryophyllus) has an important place in cut flower production in Antalya Region of Turkey where great potential and exportation exists. During the first year of the study, 17 carnation growers in this region were elected and nutrient status of the flowers were examined by means of leaf and growing media (soil, sand+soil, peat+sand+soil) samples taken from Bagatel, Rony, Lior, Medea and Colibrie varieties

The acid soils covering large areas of Africa, Asia and Latin America represent a major part of the world's marginal and under-utilized arable land. While soil corrective methods such as liming have helped to promote agriculture in these regions, most wheat germplasm is highly susceptible to the toxicities present in acid soils. Genetic variability for resistance to aluminum, the major toxicity factor, has been used in wheat to develop high yielding varieties. Collaborative research, involving the Brazilian wheat breeding programs and CIMMYT growing two generations per year, has led to the identification of semidwarf varieties. While the genetic advance in yield potential shown by the new varieties is reasonably high in the temperate regions of Brazil, the progress in the newer non-traditional warm areas has been less. Limited germplasm variability for resistance to high temperature, drought, and the diseases prevalent in the warmer areas seems to be the most critical factor limiting progress. In addition, soil and organic matter degradation and nutrient uptake efficiency, especially for phosphorus, need to be taken into consideration in order to improve breeding efficiency on such soils

The acid soils covering large areas of Africa, Asia and Latin America represent a major part of the world's marginal and under-utilized arable land. While soil corrective methods such as liming have helped to promote agriculture in these regions, most wheat germplasm is highly susceptible to the toxicities present in acid soils. Genetic variability for resistance to aluminum, the major toxicity factor, has been used in wheat to develop high yielding varieties. Collaborative research, involving the Brazilian wheat breeding programs and CIMMYT growing two generations per year, has led to the identification of semidwarf varieties. While the genetic advance in yield potential shown by the new varieties is reasonably high in the temperate regions of Brazil, the progress in the newer non-traditional warm areas has been less. Limited germplasm variability for resistance to high temperature, drought, and the diseases prevalent in the warmer areas seems to be the most critical factor limiting progress. In addition, soil and organic matter degradation and nutrient uptake efficiency, especially for phosphorus, need to be taken into consideration in order to improve breeding efficiency on such soils.

Variance and correlation analysis were carried out among nutritional composition of mulberry leaves taking three varieties (BSRM-5, BSRM-18 and BSRM-19) in three different seasons under six different doses of NPK fertilizers including control during 1990-91. The variance analysis showed that varieties, treatments and seasons have significant effects on the nutritional composition of mulberry leaves. Simple correlation studies indicated that all the nutritional components are closely interrelated with each other and directly or indirectly influenced by one another. It was also found from partial correlation analysis that nutritional components viz., free sugar, reducing sugar, soluble carbohydrate and starch are strongly associated with protein content of mulberry leaves. The multiple correlation analysis again showed that soluble carbohydrate and starch as well as free sugar and reducing sugar contents influence the protein content of mulberry leaves more strongly than all other nutrient contents studied.

Study on optimum fertilizer application for asparagus is subproject of asparagus development research for export project. It was conducted to operate at Lampang Agricultural Research and Training Centre (LARTC) between April 1991 to August 1993 and 4 variety of asparagus [MW(USA), F2UC 157,UC309(USA), Brock's Improved] were used to main plot in each subproject. It was devided to 2 experiments which were as follow. Experiment 1: This experiment aimed to study the optimum fertilizer ratio (N:P2:O5:K2O). Treatments were (1) 1:1:1 (2) 2:1:2 (3) 3:2:3: and 150 kg per rai of nutrient was applied for each treatments. The results showed no significant difference between fertilizer ratios, but 1:1:1 and 2:1:2 tend to be higher than 3:2:3. Besides that we found that 2:1:2 tend to be suitable for Brock's Improved variety which was high yield variety of this experiment. There is no interaction between fertilizer ratio and asparagus varieties. Experiment 2: This experiment aimed to study optimum rate of chemical fertilizer (ratio 1:1:1) for asparagus. Treatments were 100, 150 and 200 kilogram of nutrient per rai. The result revealed that the optimum rate was 150 kg per rai but it was not significant difference from the others. Brock's Improved variety was still the highest yield. There is no interaction between fertilizer application rate and asparagus varieties.

Seasonal changes of leaf petiole and blade nutrient levels were compared in eight wine grape varieties over the 1991-1992 vegetative period. Sampling of the opposite to each bunch leaf was made at each of five successive growth stages. The results indicated that petiole Phosphorus, Potassium and Manganese levels were higher than blade levels. Blade Calcium and iron levels were generally higher than petiole levels. The concentrations of Calcium and Iron in the leaves have increased form anthesis to grape maturity and the concentration of Potassium decreased after the veraison stage. There was a highly significant correlation between petiole and blade levels of P, K, Mg, Ca, Fe and Zn.

The nutrient and glucosinolate content in "O" and "OO" rapeseed varieties was determined. In the "OO" variety the glucosinolate content was 85.7 % lower than in "O". The inclusion of "O" meal in the experiment mixture was tested in a feeding trial with 520 pigs of live weight 25-118 kg. The live weight gain (LWG) in the control group was 0.645 kg/pig/day within 144 days of fattening, and consumption was 3.41 kg/kg of LWG. The LWG in the experimental group ("O" meal) was 0.565 kg/pig/day, and consumption was 3.94 kg/kg of LWG within 165 days. The differences between the means were statistically significant (P less than 0.01).