Effect of some sorghum cultivar residues on emergence and growth of broad bean

An experiment was conducted on Agricultural and Biological Research Labs. I.O.N.E.C. from 17/7/2000 till 16/3/2001. Experiment included sowing five sorghum cultivar seeds [i.e Rasoul, Motamyes, SD-10 and SD-9]. Sorghum plants were pulled out with its roots at physiological ripening stage, dried, grilled, and then used with soil at a rate of 3 and 6 g. residues/kg. soil, to study the direct effect on emergence and growth of broad bean. Results indicated that, sorghum residues added to the soil at t rate of 3 or 6 g. emergence of broad bean. On the other hand, the concentration of 6 g/residues/kg. Soil reduced the total plant dry weight compared to the control, but 3 g. residues/kg. Soil induced plant growth, i.e. plant height from 40.4 cm. to 44.4 cm and total plant dry weight from 30.5 g/plant to 36.8 g/plant when compared with 3 g. peatmoss/kg. Soil, respectively. Considerable variations were observed on the allelopathic effect among the tested cultivars against broad bean plant. Rasoul cv. was the most inhibitor cv. [plant height was 40.1 cm. and total plant dry weight was 33.1 g/plant], while Tabit cv. Was the least inhibitor cv. [plant height was 46.7 cm and total plant dry weight was 39.7 g/plant]

Effects of temperatures and light accumulations on some vegetative growth characteristics and dry weight at flowering and harvest of three rice cultivars[Oryza sativa, L.]

An experiment was conducted in Iraq, to study the effect of temperature and light accumulations [which resulted from growing plant at different sowing dates]. On the vegetative; flowering and yield parameters for three rice cultivars Oryza sativa, L. at two locations, Abbasyia and Hira, Najaf. Factorial experiment with Spilt Plot Design was used with three replications. Main plots included three cultivars [Mushkhab 1, Anber 33 and IPA 1]. Sub - plots included sowing dates that were randomly distributed and applied from 15/5/1998 to 10/7/1998. Temperatures light accumulations were as the following: 1621; 1524 and 142 [1] heat units and 1795; 1679; and 1494 [2] light hours for cv. Mushkhab 1. And 1524; 1342 and 990 h.u. and 1679; 1494 and 1117 1. h. for cv. Amber 33. And 1524; 1342 and 1158 h.u. and 1679; 1494 and 13071. h. For cv. IPA 1. This experiment revealed that: There were significant effects for both heat and light accumulations during the whole growing period on the flowering and growth characteristics, particularly, spike emergence and both repining and harvest periods. There was a slight effect for the tow locations in general, on the tested cultivars during the different growing periods in respect to their flowering growth parameters, but, in general, Hira soil gave begetative growth characteristics better than Abbasyia Soil. Cultivars showed different growth stages as an effect of temperature and light Accumulations

Effect of watering periods and fertilization levels on leaf chemical contents and yield of three rice cultivars at Najaf

An experiment was conduced at Al-Mshkhab Rice Research Station for growing season of 2001. The aim as to study the response of three new introduced rice cultivars to Iraq. i.e. Al Somood; yasmin and Al-bernamag. 4 under the effect of watering periods [Continuous flooding "control" and watering applied to two intervals, after 5 and 10 days] and fertilization level [soil application by K and foliar application by Zn. Four treatment were used. [control; K [30 kg/Donum; 2K [60 kg/Donum and K+Zn [30 kg/Donum + 1.0 g/L., respectively]. Split- Split plot Design was used with three replicates. Duncans Multiple Rang Test was used to compare means at probability level of 5 percent. Four leaf chemical contents besices productivity were studied. Results indicated that: - A reduction in chlorophyll a, b; carbohydrates contents and productivity with plants grown by watering after 10 days, whereas, praline, content increased with the above watering treatments. - Al-sommod cultivar produced the highest contents from chlorophyll a and praline, whereas, Al- bernamay 4. Produced the highest contents for chlorophyll b and carbohydrates. These two cultivars were for differ in productivity. - Chlorophyll a and carbohydrates contents increased with treatments of 2K, and K+Zn. Chlorophyll b and productivity increased with K+Zn. Proline content decreased with the above fertilization treatments. - Fertilization treatments [K+Zn] with Al- somood and Al- bernamag 4 cultivars with flooding watering interactions produced the best values of chlorophyll a, b; carbohydrates and productivity. Mean while, the interaction between plants of yasmin culivars with out fertilization treatment and watering applied after 10 days produced the highest content of proline

Morphological study of the genus calendula L.[compositae]in Iraq

The genus Calendula L. in Iraq is reviewed. Species have been systematically examined. The morphological study includes studying the characters of roots, Stems Leaves, Flowering heads, Involucres bracts, Inflorescense, Flowers, Fruit in addition to indumentum were studied. Results Showed that Calendula Species with distinct morphological features. It was confirmed that the plant habit and cypsela characters are the most important features for discriminating among Species. [3] Species of the genus Calendula were recognized for Iraq